The MRI and Looping: For Ambient & Experimental Music?

I just had a most exhilarating experience: my first
MRI (on my lower back). This was amazing. I laid down on a sliding table,
and they pushed me into a sarcophagus like tube with mere inches around
my entire body. They put large headphones on my head, and then for
the next 30 minutes I was eased into a seemingly euphoric and meditative
state. What I heard were a series of interesting sounds...from jackhammer-like
hammering, to buzzing or vibrating cycles, bizarre sci-fi industrial like
sounds, and so on. It was delightful. The MRI technician said it was a
rarity for someone to actually enjoy that procedure. At one point
in time, I was in a half waking/dream state and was awoke by my leg
twitching. I could have stayed in there most of the day. And the
amazing thing is that when I asked about the source of the sounds, he said they
were not mechanically generated; rather, around my body, encased in metal, was a
giant electrical coil surrounded by helium, chilled down to a cool minus 270
degrees. The sounds were a result of changes they were making in the
electrical current and the resulting vibrations to the machine.
Unbelievable...not sure how all that produces an image of my back,
however.

...anyway, I started thinking, I would love to have
that 30 minutes captured on a digital recorder so that I could use it for
looping or as an ambient backdrop to my more experimental looping.